an activation code is a code that activates something. it explains its self.
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You will find the activation code on the email its will say "Activation code : 00000Thank you.
The activation code for gemclashgenerator is 111223457.
You get an activation code when you buy the game. Take the hint.
A game maker activation code is when you order a CD with a code on the back
Woozworld activation code you can get wooz and beex by buying wooz